Homework Answers
We reject H0 at level
of significance if P-value
Question 1) Since P-value for b = 0.0267 > 0.01, so
ans-> The null hypothesis is not rejected.
Question 2) ans> The coefficient is statistically not significant.
Question 3) Since P-value for b = 0.0117 < 0.05, so we reject H0 at 5% level of significance.
ans-> The coefficient is statistically significant.
Question 4) ans-> The null hypothesis will be rejected.
Question 5) ans-> True
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Question 1 (1 point) Assume that you have estimated the slope coefficient (b) for the explanatory...
Question 1 2 pts In regression analysis, an estimated coefficient is statistically significant when: the associated...
Question 1 2 pts In regression analysis, an estimated coefficient is statistically significant when: the associated p-value is close to 1. 0 the ratio of the standard error divided by the estimated coefficient is close to 0. the associated p-value is close to O the ratio of the estimated coefficient divided by the standard error is close to 0. Question 2 2 pts You are reading an academic paper where one of the estimated coefficients has a p-value of 0.0965...
Let x be a randon variable representing dividend yield of Australian bank stocks, we may assume...
Let x be a randon variable representing dividend yield of Australian bank stocks, we may assume that x has a normal distribution with σ = 2.6%. A random sample of 17 Australian bank stocks has a sample mean or 8.76%. For the entire Australian stock market, the mean dividend yield is μ 6.5 Do these data indicate that the dividend yield of all Australian bank stocks is higher than 6.5%? Use α 0.01 Are the data statistically significant at the...
Previous Page Next Page Page 6 of 14 Question 6 (1 point) The significance level and...
Previous Page Next Page Page 6 of 14 Question 6 (1 point) The significance level and P-value of a hypothesis test are given. Decide whether the null hypothesis should be rejected. Q = 0.01, P-value = 0.02 OA) Reject the null hypothesis. B) Do not reject the null hypothesis. Previous Page Next Page Page 6 of 14
1) In a multiple regression output, if individual test of slope coefficient for each variable shows...
1) In a multiple regression output, if individual test of slope coefficient for each variable shows that all the independent variables are not significant individually, but test on overall validity of model supports the alternative hypothesis at a specified level of significance, this is most likely due to: A. autocorrelation B. multicollinearity C. the presence of dummy variables D. the absence of dummy variables 2.
Question 1 (1 point) The table below contains the value of the house and the amount...
Question 1 (1 point) The table below contains the value of the house and the amount of rental income in a year that the house brings in ("Capital and rental," 2013). Table: Data of House Value versus Rental Value Rental Valud Rental Valud Rental Valud Rental 81000 6654 77000 4574 75000 7280 67500 6864 95000 7904 94000 8734 90000 6240 85000 7072 121000 12064 115000 7904 110000 7072 104000 7904 135000 8320 130000 9774 126000 6240 125000 7904 145000 8320...
Question 4 (3 points) The statsmodels ols() method is used on a cars dataset to fit...
Question 4 (3 points) The statsmodels ols() method is used on a cars dataset to fit a multiple regression model using Quality as the response variable. Speed and Angle are used as predictor variables. The general form of this model is: Y = Bo + B. Speed+B Angle If the level of significance, alpha, is 0.10, based on the output shown, is Angle statistically significant in the multiple regression model shown above? Select one. OLS Regression Results ==================================== ========== 0.978...
Benfords Law claims that numbers chosen from very large data files tend to have "1" as...
Benfords Law claims that numbers chosen from very large data files tend to have "1" as the first nonzero digit disproportionately often. In fact, research has shown that if you randomly draw a number from a very large data file, the probability of getting a number with "1" as the leading digit is about 0.301. Suppose you are an auditor for a very large corporation. The revenue report involves millions of numbers in a large computer file. Let us say...
2. Consider the estimated regression equation below and answer the following questions. Assume INCOME is annual...
2. Consider the estimated regression equation below and answer the following questions. Assume INCOME is annual household income (in dollars), ENT_EXP is annual entertainment expenses in dollars, and the data comes from a random sample of households in Arkansas (n=200). [25 points] ENT_EXP = 1500 + .05 * (INCOME) + e (3.79) (4.24) a) What is the expected entertainment spending if income is $45,000? b) Is the estimate for β1 (coefficient on INCOME) the sign and magnitude you...
(1 point) In each part, we have given the significance level and the P-value for a...
(1 point) In each part, we have given the significance level and the P-value for a hypothesis test. For each case determine if the null hypothesis should be rejected. Write "reject" or "do not reject" (without quotations). (a) ?-0.06, P 0.06 answer (b) ? 0.07, P 0.06 answer (c) ? 0.01, P-0.06 answer.
Use the following linear regression equation to answer the questions. x1 = 1.5 + 3.4x2 – 8.3x3 + 2.3x4 (a) Which variable is the response variable? Which variables are the explanatory variables? (b...
Use the following linear regression equation to answer the questions. x1 = 1.5 + 3.4x2 – 8.3x3 + 2.3x4 (a) Which variable is the response variable? Which variables are the explanatory variables? (b) Which number is the constant term? List the coefficients with their corresponding explanatory variables. constant? x2 coefficient? x3 coefficient? x4 coefficient? (c) If x2 = 1, x3 = 8, and x4 = 6, what is the predicted value for x1? (Use 1 decimal place.) (d) Explain how...
Question 1 2 pts In regression analysis, an estimated coefficient is statistically significant when: the associated p-value is close to 1. 0 the ratio of the standard error divided by the estimated coefficient is close to 0. the associated p-value is close to O the ratio of the estimated coefficient divided by the standard error is close to 0. Question 2 2 pts You are reading an academic paper where one of the estimated coefficients has a p-value of 0.0965...
Let x be a randon variable representing dividend yield of Australian bank stocks, we may assume that x has a normal distribution with σ = 2.6%. A random sample of 17 Australian bank stocks has a sample mean or 8.76%. For the entire Australian stock market, the mean dividend yield is μ 6.5 Do these data indicate that the dividend yield of all Australian bank stocks is higher than 6.5%? Use α 0.01 Are the data statistically significant at the...
Previous Page Next Page Page 6 of 14 Question 6 (1 point) The significance level and P-value of a hypothesis test are given. Decide whether the null hypothesis should be rejected. Q = 0.01, P-value = 0.02 OA) Reject the null hypothesis. B) Do not reject the null hypothesis. Previous Page Next Page Page 6 of 14
Question 1 (1 point) The table below contains the value of the house and the amount of rental income in a year that the house brings in ("Capital and rental," 2013). Table: Data of House Value versus Rental Value Rental Valud Rental Valud Rental Valud Rental 81000 6654 77000 4574 75000 7280 67500 6864 95000 7904 94000 8734 90000 6240 85000 7072 121000 12064 115000 7904 110000 7072 104000 7904 135000 8320 130000 9774 126000 6240 125000 7904 145000 8320...
Question 4 (3 points) The statsmodels ols() method is used on a cars dataset to fit a multiple regression model using Quality as the response variable. Speed and Angle are used as predictor variables. The general form of this model is: Y = Bo + B. Speed+B Angle If the level of significance, alpha, is 0.10, based on the output shown, is Angle statistically significant in the multiple regression model shown above? Select one. OLS Regression Results ==================================== ========== 0.978...
Benfords Law claims that numbers chosen from very large data files tend to have "1" as the first nonzero digit disproportionately often. In fact, research has shown that if you randomly draw a number from a very large data file, the probability of getting a number with "1" as the leading digit is about 0.301. Suppose you are an auditor for a very large corporation. The revenue report involves millions of numbers in a large computer file. Let us say...
(1 point) In each part, we have given the significance level and the P-value for a hypothesis test. For each case determine if the null hypothesis should be rejected. Write "reject" or "do not reject" (without quotations). (a) ?-0.06, P 0.06 answer (b) ? 0.07, P 0.06 answer (c) ? 0.01, P-0.06 answer.
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